I can see how I might have been 4 in the past, but I think I've over come it.:) I could be a 5, completely lost in thoughts, for obscenely long periods of time. Nothing earth-shattering seems to come from it though. Force myself out of my head and 9 seems to fit. Not as interesting, but more effective at a 9. It's easier and I accomplish more. That could be a definition of type. But maybe too easy though, like auto-pilot.
Can you just pick the one you WANT to be? ('course I probably couldn't choose that either)